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If there is failure of migration of the neural crest cells to the facial region during prenatal development, _____ can develop in the embryo.

How many X-type chromosomes are necessary for the embryo to become of the female gender when present during prenatal development?

All of the following are true of gingivitis EXCEPT:

Which type of epithelium is associated with lining mucosa?

The crystalline formation of mature bone consists of mainly of which of the following?

Which of the following structures of the periodontium are visible clinically?

When viewing the alveolar mucosa, it appears more red due to:

Which of the following may cause apical changes of the gingival margin?

The oral tissue closest to the inner cheek is best described as

The lips are fleshy folds that mark the gateway of the _____ cavity proper.